Considering how Obamma has acted so far, the economics of the US and we are already fighting two wars it's little surprize little kim is acting up. I doubt we have to be concerned with China backing North Korea if kim does anything stupid as there is far more at stake and CVhina doesn't want WWIII any more than we do.
I do find it interesting as we close in on the date where our troops are to pull out of Iraq major cities fighting has increased in those cities. I believe it is at the best interest of some to keep our troops there/occupied. If Oboma moves that date it will be a big mistake. First it keeps troops there that coud be redeployed and second is the expense.